| A1-Si-Cu合金低温力学性能的研究 |
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| 引用本文： | 张洪坤.A1-Si-Cu合金低温力学性能的研究[J].四川冶金,2013(5):51-58. |
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| 作者姓名： | 张洪坤 |
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| 作者单位： | 攀钢集团西昌钢钒有限公司冷轧厂,四川西昌615012 |
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| 摘 要： | 主要以Al-Si-Cu合金为研究对象，研究了低温变化对锶变质后的Al-Si-Cu合金组织及性能的影响。变质处理后的Al-si-Cu合金的抗拉强度和屈服强度随温度的降低均升高，同时伸长率和断面收缩率随温度的降低也略有上升。通过对Al-si-Cu合金金相观察，加入Sr元素后，合金的组织得到显著细化。变质后的Al-si-Cu合金在低温下具有更好的力学性能。
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| 关 键 词： | Al-Si-Cu铝合金 锶变质 低温 力学性能 |
Study of the Mechanical Properties of AI-Si-Cu Alloy Under Low Temperature |
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| ZHANG Hong-kun.Study of the Mechanical Properties of AI-Si-Cu Alloy Under Low Temperature[J].Sichuan Metallurgy,2013(5):51-58. |
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| Authors: | ZHANG Hong-kun |
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| Affiliation: | ZHANG Hong-kun (Cold Strip Mill of Pangang Group Xichang Steel and Vanadium Corporation, Xichang 615012, Sichuan, China) |
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| Abstract: | A1- Si -Cu alloy is the main subject investigated in this paper, and the influnces of low tem- perature on the microstructure and mechanical properties of A1 - Si - Cu alloy in Sr-modified states have been investigated. The ultimate tensile strength and yield strength of A1 - Si - Cu alloy in St-modified states increase with the decrease of temperature. And contraction of area and elongation percentage of A1 - Si - Cu alloy in Sr-modified states also increase as the temperature reduces. By means of observing the microstructure of A380 aluminum, with the addition of Sr element, the microstruetures of the alloys re- fined dramatically. The mechanical properties of A1 - Si - Cu alloy in St-modified states is better with the decrease of temperature. |
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| Keywords: | A1 - Si - Cu alloy Sr modification low temperature mechanical properties |
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